Pipe bit



C. C. DOTY PIPE BIT -March 3, 1942.

Filed Jan. 30, 1940 iLY Patented Mar. 3, 1942 l U N l TE D STATES PATENT OF-Fl CE- PIPE-BIT Chester o; Doty, Silver! Creek, N, Y. Application January. 30, 1940, Serial 'Noi 3 1654071 2 Claims.

This invention relatestoapipebit audit is an objectof. the. invention to provide a pipe bit.- or its equivalent'with' means to prevent saliva from the mouth of the smoker having ingress to' the pipe bowl with which the bit'is used whereby is eliminated the formation'within theibowl of tobacco tar. and gum so obnoxious to' the' smoker.

The'invention also has foran object to provide a'pipe bit or its equivalent with meansto prevent saliva passing therethrough. to the pipev bowl irrespective. of the angle or inclination of the bit with respect to the mouth of theuser. i

The invention has for a further objecttoiprovidea pipe bit or its equivalent having 'a'smoke ducttherein communicating withthe inner or .lower end portion of anelongated chamber and having a smoke draft leading from the upper portion. of such chamber for: communication with the bowl of the pipe andwherein said chamber hasarranged'therein a valve member for closing flow out through the upper or outer portion-of the chamber upon undue tilting of the bit during a. smokingoperation, and which valve is so constructed and arranged as. to ofier at no time any obstruction to the-suction or drawof the smoker.

An additional object of the invention is to provide a pipe bit or its equivalent wherein the line of flowtherethroughof the smoke is intersected by a collecting chamber open at one end and wherein said open end is closed by aplug having means for coaction with a free or floating valve member within the chamber to prevent said valve interfering with the suction or drawthrough the bit but permitting said valve to operate to shutoff any flow-of. drift saliva-to the bowl of the pipe.

It is a particular object of the invention to provide a pipe bit or its equivalent having means effectiveatany degree of angle or tilt in which apipe may beheld to prevent ingress of drift saliva to the bowl of. the'pipe with which the bit isused and wherein the 'bit-is so constructedas to allow the bit to drain and clean without disengagement of. the bit from the-bowl. or bowl stem.

The invention consists in the .detailsof construction and in the combination and-arrangement of the several parts of my improvcd'pipe bit whereby certain important advantages are attained and the device renderedsimpler, less expensive and otherwise moreconvenient and" advantageous for use, as will be hereinafter morefully set forth.

The novel features of my invention will hereinafter. be definitely claimed.

In order that my invention may be the better having a bit applied theretoconstructed in accord? ance with an embodiment of my invention;v

Figure 2 is a longitudinal sectionalviewtaken substantially on the line.2+-2 of Figure 1.

Figure 3 is a. sectional View. takensubstantially on the line ii -3: of Figure 2.

As disclosed in theaccompanyingdrawing;P denotes a pipe: bowl of any desired design and which carries and .has in communication with the bottom thereof a conventionalistem Sv of desired length. My improved hitv 13;. aszherein' disclosed, has slip engagement; as. at I, within the outer end ofthe stem S 'although suchconnection or coupling may be otherwise as preferred.

My; improved bit 3 is preferably molded' from a hard rubber-compoundor of any other material that'can bemolded into desired shape and structure. The bitBisof desiredlength. and adjacent one end has a laterally extending enlargement or block 2-formedto .providea-cylindrical chamber 3' which extends through; the body proper ofzthe bit B and opens'throughthe face portion of the bit B remote from the block 2. The connection orcoupling: between the bit B and. the stem S is such as topreferablyhave the block 2. and the chamber 3.-therein disposed. upwardly or in the same general direction asthe bowl P'with respect tothe stem S.

The open endof' thischamb'er 3 is closed by a -plug i -prefera-blyof: the same material as: the bit.- B and;: as hereindisolosed, this plug d threads within the lower: or-open end: portion ofthe chamber 3:; The-outer face ofthis plug 4: is provided with the radially disposed and equidistantly; spacedribs-or lugs 5 so formed asto provide. feetwhereby an assembled pipemay be readily maintained ona supporting surface with the bowl P upwardly disposed as indicated in Figure 2 of the drawing.

This plug, 4 when" applied terminates belowqthe adj acentiend of! the smoke ductfi idisposed through the bit Brin advance of the chamber 3. As is illustrated .in Figure'fl; this duct hiisstraight from end to end.

Extending; withinztheouter or upper portion of the chamber: 3 (at: substantiallyztheaxialcenter thereof is an endiportion a of-a tube-10f aluminum or other desired-material; This-tube! is molded within the bit B and sits-enlargement or: block; 2 and is-of: alleng-thand so formed as to: extend; to and terminate at the axial center of the inner end of the bit B or that end portion of the bit B which is coupled or connected to the stem S.

Within the chamber 3 is a free or floating valve member 8 preferably of solid metal and of a size in excess of the bore of the tube 1 within the chamber 3. The end portion of the tube I within the chamber 3 is formed to provide a valve seat 9 with which the valve member 8 coacts in and for a manner to be hereinafter referred to.

This valve member 8, as herein disclosed, is spherical in form and of a diameter in excess of the radius of the chamber 3 and also of a diameter materially in excess of the width of the space v of the chamber 3 surrounding the portion of the tube 1 extending within said chamber. As is particularly illustrated in Figure 2, the inner portion of the tube 1 is angularly disposed with respect to the seat 9 thereby providing a dam to substantially eliminate the passage of foreign matter with the smoke into the chamber 3.

The inner face of the plug 4 at the axial center thereof is provided with an outstanding pin ID of a length to extend within the chamber 3 beyond the adjacent end of the duct 6 when the plug 4 is applied. This pin l provides means whereby the free or floating valve member 8 is prevented from assuming a position interfering with flow through the duct 6. The pin I0, as herein. disclosed, is conoidal in form and of a diameter at its juncture with the plug 4 materially less than the diameter of the plug so that this pin It, or lug as it may be called, will at no time offer any interference or obstruction to fiow through the duct 6.

My improved bit may be employed with equal facility in connection with new and old pipes.

The valve member 8 remains in an open position with respect to its seat 9 when the bit B is in any position up to approximately a fifty degree angle or tilt which allows the smoke duct 6 a full and free opening and which fifty degree angle is the normal maximum or average angle a pipe bit is held while smoking a pipe. Within this angle of fifty degrees no drifting saliva flowing through the duct 6 into the chamber 3 will pass out through the tube 1 and to the bowl P of the pipe.

However, when the tilt or angle of the pipe, or particularly the bit B, may exceed this approximate fifty degree angle the valve member 8 will automatically engage its seat 9 and close the tube '1 against flow therethrough of the saliva that may be within the chamber 3. In this abnormal angle or inclination of the bit B the drift saliva will be received within the chamber 3 surrounding the inserted portion of the tube 1. This will also be true should the bit B be rotated a material distance beyond the vertical. However, irrespective of the position of the pipe bowl P or the bit B the valve member 8 will offer no hinderance or obstruction to the drawing or suction of the smoke from the bowl P to the mouth of the smoker.

When the bit B is in its normal position, that is to say, with the chamber 3 substantially vertically disposed, any saliva collected within the chamber 3 may be readily drained out through the duct 6 and particularly upon giving a sudden jerk to the pipe. It will, therefore, at once be obvious that it is not required to remove the bit B from the pipe to free the bit of any collected saliva. This is important as it eliminates mussing up or dirtying the fingers and interruption or continued smoking. My improved bit as herein disclosed eliminates the necessity of cleaning out the bowl P or stem S as no excess drift saliva enters these parts to create the cooking or frying process which forms tobacco tar, goo and gum that chokes the pipes now generally in use. 1

My improved bit also maintains the bowl P and stem S in a continued dry state, thus assuring, the pipe to be at all times in proper working condition. It is also to be pointed out that with the use of my improved bit the bowl P and the stem S are maintained in a balanced heat condition which is of particular advantage in assuring these interference with the tobacco in the bowl and parts being in a dry condition during the period "of smoking and for the life of the pipe.

It is to be particularly noted that the structure of the bit, as herein disclosed, is such that the use of a spring or other means in connection with the valve member 8 is not required.

From the foregoing description it is thought to be obvious that a pipe bit constructed in accordance with my invention is particularly well adapted for use by reason of the convenience and facility with which it may be assembled and used, and it will also be obvious that my invention is susceptible of some change and modification Without departing from the principles and spirit thereof and for this reason I do not wish to be understood as limiting myself to the precise arrangement and formation of the several parts herein shown in carrying out my invention in practice except as hereinafter claimed.

I claim:

1. A bit for a smoking pipe provided intermediate its end with a chamber, a smoke duct within the bit leading from one end portion of the chamber to the outer end of the bit, a smoke tube leading from the inner end of the bit and extending within the chamber at the opposite end thereof, the portion of the'tube within the chamber being substantially at right angles to the induction end of the tube and the induction end of the smoke duct and terminating in a plane short of said induction ends of the tube and smoke duct, the inserted end of the tube constituting a valve seat. a freely mounted valve member within the chamber for coaction with the valve seat only upon undue tilting or turning of the bit, the end of the chamber adjacent to: the duct being open, a plug for closing said opening, and a pin extending from the inserted end of the plug at substantially the center thereof to provide means to prevent the valve member closing the duct.

2. A bit for a smoking pipe provided intermediate its end with a chamber, a smoke duct within the bit leading from the chamber to the outer end of the bit, a smoke tube leading from the inner end of the bit and extending within the chamber at one end thereof, said duct communicating with the chamber at the opposite end portion, the inserted end of the tube constituting a valve seat, a freely mounted valve member within the chamber for coaction with the valve seat upon undue tilting or turning of the bit, the end of the chamber adjacent to the duct being open, a plug for closing said opening, and a pin extending from the inserted end of the plug at substantially the center thereof to provide means to prevent the valve member closing the duct, said part having its outer end spaced from the inserted end of the tube a distance greater than the diameter of the valve member.

CHESTER C. DOTY. 

